[Ips-wgr] SWS Weekly Geo. Report (25 May 17) issued 0208 UT on 25 May 2017 [SEC=UNCLASSIFIED]

rwc rwc at ips.gov.au
Thu May 25 12:08:27 EST 2017


SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 25 MAY 2017, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (16 MAY - 24 MAY)
K indices are in UT (0-24). For conversion to local time:

AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 16 May   2223 3101    7  
 17 May   1123 2221    6  
 18 May   2230 0111    4  
 19 May   1331 3332   11  
 20 May   2345 3322   17  
 21 May   2233 1121    7  
 22 May   1123 3222    8  
 23 May   2211 1122    5  
 24 May   1111 1000    1  

*estimated from real time data

NOTE: Indices may have been generated from data obtained in 
cooperation with the following organisations: Geoscience Australia, 
University of Newcastle Space Physics Group, Australian Government 
Antarctic Division and International Center for Space Weather 
Science and Education, Japan.


Active on 20 May.   Quiet to unsettled on other days.

2. FORECAST (25 MAY - 24 JUNE)
Disturbed Periods: 
26-27 May,  16 Jun

Best Quiet Periods: 
 25 May,  28-30 May,  1-2 Jun,  4-5 Jun,  7-9 Jun.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 28-30 May, 1-2 Jun,  4-5 Jun,  7-9 Jun,  21-24 Jun.

Central Australian Regions:
 Mildly Disturbed Periods: 26-27 May, 16-17 Jun.
 Best Quiet Periods: 28-30 May, 1-2 Jun,  4-5 Jun,  7-9 Jun,  21-24 Jun.

Southern Australian Regions:
 Disturbed Periods: 26-27 May, 16-17 Jun.
 Best Quiet Periods: 28-30 May, 1-2 Jun,  4-5 Jun,  7-9 Jun,  21-24 Jun.


Pc3 pulsations are high frequency (10-45 second period) variations 
of the Earths magnetic field. Daily pc3-indices are the daily sum of 
20 minute pc3-indices for that station and have been shown to be well 
correlated with rejection of high resolution aeromagnetic survey 
flight-line data.

PLEASE NOTE:
Geomagnetic activity can frequently be determined by short timescale 
solar events that cannot be forecast a week in advance, particularly
at solar maximum.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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